User Activity

I just bought this printer. Why is it printing black blobs on the very top middle and along the sides of my paper?
I AM ABOUT TO LOSE MY MIND. This software is not opening on my Windows 11. SOMEONE PLEASE HELP ME!!!! I need a bunch of things printed for my wedding.
I have bought homemade paper for my wedding and was really hoping my TS9500 could print on it. The paper is 300gsm, I have 4"x4", 4"x6", and 9"x12" sizes. How can I make this work? TIA!